#include "cfgloop.h"
#include "cfglayout.h"
#include "diagnostic-core.h"
-#include "toplev.h"
#include "tree-scalar-evolution.h"
#include "tree-vectorizer.h"
#include "langhooks.h"
}
+/* Remove dead assignments from loop NEW_LOOP. */
+
+static void
+remove_dead_stmts_from_loop (struct loop *new_loop)
+{
+ basic_block *bbs = get_loop_body (new_loop);
+ unsigned i;
+ for (i = 0; i < new_loop->num_nodes; ++i)
+ {
+ gimple_stmt_iterator gsi;
+ for (gsi = gsi_start_bb (bbs[i]); !gsi_end_p (gsi);)
+ {
+ gimple stmt = gsi_stmt (gsi);
+ if (is_gimple_assign (stmt)
+ && TREE_CODE (gimple_assign_lhs (stmt)) == SSA_NAME
+ && has_zero_uses (gimple_assign_lhs (stmt)))
+ {
+ gsi_remove (&gsi, true);
+ release_defs (stmt);
+ }
+ else
+ gsi_next (&gsi);
+ }
+ }
+ free (bbs);
+}
+
+
/* Function slpeel_tree_peel_loop_to_edge.
Peel the first (last) iterations of LOOP into a new prolog (epilog) loop
if (update_first_loop_count)
slpeel_make_loop_iterate_ntimes (first_loop, first_niters);
- adjust_vec_debug_stmts ();
-
BITMAP_FREE (definitions);
delete_update_ssa ();
+ /* Remove all pattern statements from the loop copy. They will confuse
+ the expander if DCE is disabled.
+ ??? The pattern recognizer should be split into an analysis and
+ a transformation phase that is then run only on the loop that is
+ going to be transformed. */
+ remove_dead_stmts_from_loop (new_loop);
+
+ adjust_vec_debug_stmts ();
+
return new_loop;
}
edge pe;
basic_block new_bb;
gimple_seq stmts;
- tree ni_name;
+ tree ni_name, ni_minus_gap_name;
tree var;
tree ratio_name;
tree ratio_mult_vf_name;
ni_name = vect_build_loop_niters (loop_vinfo, cond_expr_stmt_list);
log_vf = build_int_cst (TREE_TYPE (ni), exact_log2 (vf));
+ /* If epilogue loop is required because of data accesses with gaps, we
+ subtract one iteration from the total number of iterations here for
+ correct calculation of RATIO. */
+ if (LOOP_VINFO_PEELING_FOR_GAPS (loop_vinfo))
+ {
+ ni_minus_gap_name = fold_build2 (MINUS_EXPR, TREE_TYPE (ni_name),
+ ni_name,
+ build_one_cst (TREE_TYPE (ni_name)));
+ if (!is_gimple_val (ni_minus_gap_name))
+ {
+ var = create_tmp_var (TREE_TYPE (ni), "ni_gap");
+ add_referenced_var (var);
+
+ stmts = NULL;
+ ni_minus_gap_name = force_gimple_operand (ni_minus_gap_name, &stmts,
+ true, var);
+ if (cond_expr_stmt_list)
+ gimple_seq_add_seq (&cond_expr_stmt_list, stmts);
+ else
+ {
+ pe = loop_preheader_edge (loop);
+ new_bb = gsi_insert_seq_on_edge_immediate (pe, stmts);
+ gcc_assert (!new_bb);
+ }
+ }
+ }
+ else
+ ni_minus_gap_name = ni_name;
+
/* Create: ratio = ni >> log2(vf) */
- ratio_name = fold_build2 (RSHIFT_EXPR, TREE_TYPE (ni_name), ni_name, log_vf);
+ ratio_name = fold_build2 (RSHIFT_EXPR, TREE_TYPE (ni_minus_gap_name),
+ ni_minus_gap_name, log_vf);
if (!is_gimple_val (ratio_name))
{
var = create_tmp_var (TREE_TYPE (ni), "bnd");
else
{
gimple_seq new_stmts = NULL;
+ bool negative = tree_int_cst_compare (DR_STEP (dr), size_zero_node) < 0;
+ tree offset = negative
+ ? size_int (-TYPE_VECTOR_SUBPARTS (vectype) + 1) : NULL_TREE;
tree start_addr = vect_create_addr_base_for_vector_ref (dr_stmt,
- &new_stmts, NULL_TREE, loop);
+ &new_stmts, offset, loop);
tree ptr_type = TREE_TYPE (start_addr);
tree size = TYPE_SIZE (ptr_type);
tree type = lang_hooks.types.type_for_size (tree_low_cst (size, 1), 1);
fold_build2 (RSHIFT_EXPR, type, byte_misalign, elem_size_log);
/* Create: (niters_type) (nelements - elem_misalign)&(nelements - 1) */
- iters = fold_build2 (MINUS_EXPR, type, nelements_tree, elem_misalign);
+ if (negative)
+ iters = fold_build2 (MINUS_EXPR, type, elem_misalign, nelements_tree);
+ else
+ iters = fold_build2 (MINUS_EXPR, type, nelements_tree, elem_misalign);
iters = fold_build2 (BIT_AND_EXPR, type, iters, nelements_minus_1);
iters = fold_convert (niters_type, iters);
}
tree addr_tmp, addr_tmp_name;
tree or_tmp, new_or_tmp_name;
gimple addr_stmt, or_stmt;
+ stmt_vec_info stmt_vinfo = vinfo_for_stmt (ref_stmt);
+ tree vectype = STMT_VINFO_VECTYPE (stmt_vinfo);
+ bool negative = tree_int_cst_compare
+ (DR_STEP (STMT_VINFO_DATA_REF (stmt_vinfo)), size_zero_node) < 0;
+ tree offset = negative
+ ? size_int (-TYPE_VECTOR_SUBPARTS (vectype) + 1) : NULL_TREE;
/* create: addr_tmp = (int)(address_of_first_vector) */
addr_base =
vect_create_addr_base_for_vector_ref (ref_stmt, &new_stmt_list,
- NULL_TREE, loop);
+ offset, loop);
if (new_stmt_list != NULL)
gimple_seq_add_seq (cond_expr_stmt_list, new_stmt_list);
Input:
DR: The data reference.
- VECT_FACTOR: vectorization factor.
+ LENGTH_FACTOR: segment length to consider.
Return an expression whose value is the size of segment which will be
accessed by DR. */
static tree
-vect_vfa_segment_size (struct data_reference *dr, tree vect_factor)
+vect_vfa_segment_size (struct data_reference *dr, tree length_factor)
{
- tree segment_length = fold_build2 (MULT_EXPR, integer_type_node,
- DR_STEP (dr), vect_factor);
-
+ tree segment_length;
+ segment_length = size_binop (MULT_EXPR,
+ fold_convert (sizetype, DR_STEP (dr)),
+ fold_convert (sizetype, length_factor));
if (vect_supportable_dr_alignment (dr, false)
== dr_explicit_realign_optimized)
{
tree vector_size = TYPE_SIZE_UNIT
(STMT_VINFO_VECTYPE (vinfo_for_stmt (DR_STMT (dr))));
- segment_length = fold_build2 (PLUS_EXPR, integer_type_node,
- segment_length, vector_size);
+ segment_length = size_binop (PLUS_EXPR, segment_length, vector_size);
}
- return fold_convert (sizetype, segment_length);
+ return segment_length;
}
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
VEC (ddr_p, heap) * may_alias_ddrs =
LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo);
- tree vect_factor =
- build_int_cst (integer_type_node, LOOP_VINFO_VECT_FACTOR (loop_vinfo));
+ int vect_factor = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
+ tree scalar_loop_iters = LOOP_VINFO_NITERS (loop_vinfo);
ddr_p ddr;
unsigned int i;
- tree part_cond_expr;
+ tree part_cond_expr, length_factor;
/* Create expression
((store_ptr_0 + store_segment_length_0) < load_ptr_0)
tree addr_base_a, addr_base_b;
tree segment_length_a, segment_length_b;
gimple stmt_a, stmt_b;
+ tree seg_a_min, seg_a_max, seg_b_min, seg_b_max;
dr_a = DDR_A (ddr);
stmt_a = DR_STMT (DDR_A (ddr));
- dr_group_first_a = DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_a));
+ dr_group_first_a = GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt_a));
if (dr_group_first_a)
{
stmt_a = dr_group_first_a;
dr_b = DDR_B (ddr);
stmt_b = DR_STMT (DDR_B (ddr));
- dr_group_first_b = DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_b));
+ dr_group_first_b = GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt_b));
if (dr_group_first_b)
{
stmt_b = dr_group_first_b;
vect_create_addr_base_for_vector_ref (stmt_b, cond_expr_stmt_list,
NULL_TREE, loop);
- segment_length_a = vect_vfa_segment_size (dr_a, vect_factor);
- segment_length_b = vect_vfa_segment_size (dr_b, vect_factor);
+ if (!operand_equal_p (DR_STEP (dr_a), DR_STEP (dr_b), 0))
+ length_factor = scalar_loop_iters;
+ else
+ length_factor = size_int (vect_factor);
+ segment_length_a = vect_vfa_segment_size (dr_a, length_factor);
+ segment_length_b = vect_vfa_segment_size (dr_b, length_factor);
if (vect_print_dump_info (REPORT_DR_DETAILS))
{
print_generic_expr (vect_dump, DR_REF (dr_b), TDF_SLIM);
}
+ seg_a_min = addr_base_a;
+ seg_a_max = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (addr_base_a),
+ addr_base_a, segment_length_a);
+ if (tree_int_cst_compare (DR_STEP (dr_a), size_zero_node) < 0)
+ seg_a_min = seg_a_max, seg_a_max = addr_base_a;
+
+ seg_b_min = addr_base_b;
+ seg_b_max = fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (addr_base_b),
+ addr_base_b, segment_length_b);
+ if (tree_int_cst_compare (DR_STEP (dr_b), size_zero_node) < 0)
+ seg_b_min = seg_b_max, seg_b_max = addr_base_b;
part_cond_expr =
fold_build2 (TRUTH_OR_EXPR, boolean_type_node,
- fold_build2 (LT_EXPR, boolean_type_node,
- fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (addr_base_a),
- addr_base_a,
- segment_length_a),
- addr_base_b),
- fold_build2 (LT_EXPR, boolean_type_node,
- fold_build2 (POINTER_PLUS_EXPR, TREE_TYPE (addr_base_b),
- addr_base_b,
- segment_length_b),
- addr_base_a));
+ fold_build2 (LT_EXPR, boolean_type_node, seg_a_max, seg_b_min),
+ fold_build2 (LT_EXPR, boolean_type_node, seg_b_max, seg_a_min));
if (*cond_expr)
*cond_expr = fold_build2 (TRUTH_AND_EXPR, boolean_type_node,
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